Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Thank´s for your help, I already recived these manual from you
Text excerpt from page 4 (click to view)
INSTALLATION
IMPORTANT
It is essential that a competent installer is employed to fit this appliance. The manufacturer will not accept liability, should the above instruction or any of the other safety instructions incorporated in this book be ignored. On the end of the shaft, which includes the GJ 1/2" threaded nut, adjustment is fixed so that the washer is interposed between the components as shown in Figure 1. Screw the parts together without using excessive force, orientate the adjustment in the desired direction and then lock it all together.
A
FO 0508
B
C
Fig. 2
A) Multi positional 'L' type connector B) Main gas pipe C) Hob fixing bracket
FO 0814
FO 0264
Fig. 1
A) End of shaft with nut B) Washer C) Adjustable join
Rectangular cut-out size for hob
10 5
8
60
It is important to install the elbow correctly, with the shoulder on the end of the thread, fitted to the hob connecting pipe. Failure to ensure the correct assembly will cause leakage of gas.